Android ImageView scale type centerCrop - java

I'm creating an activity on Android. I want to show a background image in it. I put a ImageView into my main RelativeLayout.
<RelativeLayout
android:id="#+id/relativeLayoutMain"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignParentLeft="true"
android:orientation="vertical" >
<ImageView
android:id="#+id/bgImage"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_alignParentRight="true"
android:layout_alignParentBottom="true"
android:src="#drawable/bg4"
android:scaleType="centerCrop" />
</RelativeLayout>
It makes view like this.
I need to make view like this
How can I do it?

Try set ImageView attribute ScaleType=fitEnd ?

use this code.it's give the out-put as you want.
Code
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<RelativeLayout
android:id="#+id/relativeLayoutMain"
android:layout_width="150dp"
android:background="#android:color/background_dark"
android:layout_height="150dp" >
<ImageView
android:id="#+id/bgImage"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentRight="true"
android:scaleType="centerCrop"
android:src="#drawable/ic_launcher" />
</RelativeLayout>
</RelativeLayout>
one advice if u give the imageview width fill parent then it's contain whole space according to main container.
Best Luck

Set the android:background="#drawable/bg4" in the RelativeLayout like that:
The whole XML should look like that:
<RelativeLayout
android:id="#+id/relativeLayoutMain"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignParentLeft="true"
android:background="#drawable/bg4
android:orientation="vertical" >
</RelativeLayout>

First, I believe there are a couple of things wrong in the xml:
RelativeLayout does not make use of an orientation, you should remove that
Is this your full xml file? If so then the alignParentLeft in the RelativeLayout doesn't do anything because that is an attribute you use if it's parent is a RelativeLayout.
fill_parent is the deprecated name of match_parent, you should use that.
I also believe that code you have would center the image on the screen putting anything that is to big evenly on both sides and not at all what you said it does.
If you just want a background you can just use android:background="#drawable/bg4" in the RelativeLayout
EDIT: Changing the layoutparams of the ImageView to wrap_content both height and width and removing the scaleType alltogether might make it like you wanted it to be.

Related

Image not properly displayed in framelayout

I am Using a imageview under framelayout . I applied a background image in image view but image cannot fully cover the screen. it appears in center. I want to fully cover the Screen ...
How can i achieve it?
Thanx in advance :-)
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.example.muhammad.maqalatlayout.jild_copy"
android:background="#color/Green">
<ImageView
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#mipmap/brown_border1"
android:layout_margin="0dp"
android:layout_marginLeft="0dp"
android:layout_marginTop="0dp"
android:layout_marginRight="0dp"
android:layout_marginBottom="0dp"
android:layout_gravity="top|left|bottom|center_vertical|right"
android:visibility="visible"
android:adjustViewBounds="false"
android:scaleType="fitStart"/>
My Current output is like this.
I believe your scale isn't working because you are setting the android:background property. Try this:
<ImageView
...
android:src="#mipmap/brown_border1"
... />
Also, preferably put your image in the /drawable/ folder.
use
android:scaleType="fitXY" and `match_parent` instead of `fill_parent`.

How can I set the imageview to take up the width of the screen?

I would like an imagview that takes up the width of the screen (or layout) but there seems to be padding around the view that prevents me from doing this.
With the corresponding xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent" android:weightSum="1">
<ImageView android:src="#drawable/icon" android:background="#null"
android:layout_height="106dp" android:id="#+id/imageView1"
android:layout_weight="0.59" android:layout_width="match_parent"></ImageView>
</LinearLayout>
The padding is come from transparent area on android icon.
Just remove unused transparent area or use another image.
Try changing:
android:layout_width="match_parent"
to:
android:layout_width="fill_parent"
make layout width and height as fill_parent
<ImageView android:src="#drawable/icon" android:background="#null"
android:layout_height="fill_parent" android:id="#+id/imageView1"
android:layout_weight="1" android:layout_width="fill_parent"></ImageView>

Multiple Screen Support

I have some problem with multiple screen support, I work with dp(dpi) for specify the layout_heigth and layout_width and I hope that is the better way to support multiple screen, but when I tried with two smartphone I meet two different result.
I give an example, this is a layout I use:
<?xml version="1.0" encoding="UTF-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/cities_main_layout"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<ListView
android:id="#+id/citieslist"
android:layout_width="wrap_content"
android:layout_height="320dip"
android:layout_gravity="center_vertical"
android:layout_below="#id/cities_main_layout"
/>
<LinearLayout
android:id="#+id/cities_button_layout"
android:orientation="horizontal"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#id/citieslist"
android:layout_gravity="center_vertical">
<Button
android:id="#+id/bycountry"
android:layout_height="50dip"
android:layout_width="105dip"
android:background="#drawable/buttonmarket"
android:text="#string/button_bycountry"
/>
<Button
android:id="#+id/top10"
android:layout_height="50dip"
android:layout_width="105dip"
android:background="#drawable/buttonmarket"
android:text="#string/button_top10"
/>
<Button
android:id="#+id/recommended"
android:layout_height="50dip"
android:layout_width="105dip"
android:background="#drawable/buttonmarket"
android:text="#string/button_recommended"
/>
</LinearLayout>
</RelativeLayout>
The button are at the bottom of the layout, and I see two different result:
http://img600.imageshack.us/img600/5513/htcmagicg2.png http://img600.imageshack.us/img600/5513/htcmagicg2.png
http://img441.imageshack.us/img441/6440/samsunggalaxys.png http://img441.imageshack.us/img441/6440/samsunggalaxys.png
In the last smartphone I can see the buttons, instead in the first I cannot...what's wrong?
I have to write a layout for any set of screen??!!!
Your ListView has
android:layout_height="320dip"
Now if the phone screen is smaller, it will not fit.
Try doing this instead: (Edited due to comments. This is displayed correcty in eclipse)
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/relative"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<ListView
android:id="#+id/listview"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#FF0000"
android:layout_above="#+id/linlay">
</ListView>
<LinearLayout
android:id="#+id/linlay"
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="30dip"
android:background="#00FF00"
android:layout_alignParentBottom="true">
</LinearLayout>
</RelativeLayout>
Thant should fix it I think.
Cheers
As others have indicated, your problem is that you hardwired in a size for the ListView. If you want a business rule of "have the buttons at the bottom and have the ListView fill up the rest", you actually need to write code that implements "have the buttons at the bottom and have the ListView fill up the rest".
There are two main approaches here:
Use a LinearLayout parent for the buttons and the ListView. Use
android:layout_height="0px" and android:layout_weight="1" for the
ListView. Use a regular android:layout_height for the buttons (presumably in their own LinearLayout) and no
android:layout_weight for for them
Use a RelativeLayout parent for the buttons and the ListView.
Define the buttons as having android:layout_alignParentBottom="true".
Define the ListView as having android:layout_alignParentTop="true"
and android:layout_above="...", where the ... is the ID of the buttons' LinearLayout.
I would say it's because you are specifically declaring a height for your ListView and then laying the LinearLayout that holds your buttons at the bottom. Try changing it instead of being at the bottom of the ListView to something like
<LinearLayout
android:id="#+id/cities_button_layout"
android:orientation="horizontal"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:alignparentbottom="true"
android:layout_gravity="center_vertical">
I'm not entirely sure if align_parent_bottom is the 100% correct spelling of that.
Well, others have beaten me to it while I was typing, haha, but yeah, you're hardwiring a lot of things that shouldn't be, both the ListView and the Buttons. Take a look at this:
<?xml version="1.0" encoding="UTF-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/cities_main_layout"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<LinearLayout
android:id="#+id/cities_button_layout"
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
>
<Button
android:id="#+id/bycountry"
android:layout_height="50dip"
android:layout_width="fill_parent"
android:layout_weight="1"
android:background="#drawable/buttonmarket"
android:text="#string/button_bycountry"
/>
<Button
android:id="#+id/top10"
android:layout_height="50dip"
android:layout_width="fill_parent"
android:layout_weight="1"
android:background="#drawable/buttonmarket"
android:text="#string/button_top10"
/>
<Button
android:id="#+id/recommended"
android:layout_height="50dip"
android:layout_width="fill_parent"
android:layout_weight="1"
android:background="#drawable/buttonmarket"
android:text="#string/button_recommended"
/>
</LinearLayout>
<ListView
android:id="#+id/citieslist"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_above="#id/cities_button_layout"
/>
</RelativeLayout>
You have android:orientation on your RelativeLayout, which isn't actually an attribute that RelativeLayout contains.
You should use the layout_weight attribute rather than hardwiring sizes for the Buttons. In my example, all buttons have a width of fill_parent, and a weight of 1. This makes them distribute the space evenly.
List the fixed button layout first, setting it to alignParentBottom="true". Then set the ListView to fill_parent, and layout_above your button layout. This keeps the button layout at the bottom, and makes the ListView take all the space above your buttons.
Tada!

How to place a text between two images in Android

I want to create layout where I have two images at left and at right and text in center.
I have tried to do it with relative layout but unfortunetly it was unsuccessfully. Could anybody provide me an example?
Have you tried something like?
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<ImageView
android:id="#+id/img1"
android:layout_width="50dip"
android:layout_height="50dip"
android:layout_alignParentLeft="true"
android:src="#drawable/image1"/>
<ImageView
android:id="#+id/img2"
android:layout_width="50dip"
android:layout_height="50dip"
android:layout_alignParentRight="true"
android:src="#drawable/image2"/>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_toRightOf="#id/img1"
android:layout_toLeftOf="#id/img2"
android:layout_alignTop="#id/img1"
android:text="I'm between!"/>
</RelativeLayout>
If you don't need more things on your view, you could want to use LinearLayout instead, since it's more easier to implement. In that case, you just have to play with the layout_weight attribute.

Android Layout with ListView and Buttons

Alright, this specific layout is just annoying me. And can't seem to find a way to have a listView, with a row of buttons at the bottom so that the listview doesn't extend over top of the buttons, and so the buttons are always snapped to the bottom of the screen. Here's what I want:
removed dead ImageShack link
It seems like it should be so easy, but everything I've tried has failed. Any help?
Here's my current code:
RelativeLayout container = new RelativeLayout(this);
container.setLayoutParams(new RelativeLayout.LayoutParams(LayoutParams.FILL_PARENT,LayoutParams.FILL_PARENT));
//** Add LinearLayout with button(s)
LinearLayout buttons = new LinearLayout(this);
RelativeLayout.LayoutParams bottomNavParams = new RelativeLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
bottomNavParams.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM);
bottomNavParams.addRule(RelativeLayout.CENTER_HORIZONTAL);
buttons.setLayoutParams(bottomNavParams);
ImageButton newLayer = new ImageButton(this);
newLayer.setImageResource(R.drawable.newlayer);
newLayer.setLayoutParams(new LinearLayout.LayoutParams(45, LayoutParams.FILL_PARENT));
buttons.addView(newLayer);
container.addView(buttons);
//** Add ListView
layerview = new ListView(this);
RelativeLayout.LayoutParams listParams = new RelativeLayout.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT);
listParams.addRule(RelativeLayout.ABOVE, buttons.getId());
layerview.setLayoutParams(listParams);
container.addView(layerview);
I think this is what you are looking for.
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent" android:layout_height="fill_parent">
<Button android:layout_width="fill_parent"
android:layout_height="wrap_content" android:id="#+id/testbutton"
android:text="#string/hello" android:layout_alignParentBottom="true" />
<ListView android:layout_width="fill_parent"
android:layout_height="fill_parent" android:id="#+id/list"
android:layout_alignParentTop="true" android:layout_above="#id/testbutton" />
</RelativeLayout>
I had the same problem for ages.
The solution to keeping the ListView above the buttons, but preventing it from covering them up when the list is long, is to set android:layout_weight="1.0" on the ListView. Leave the layout_weight on the buttons unset so that they remain at their natural size, otherwise the buttons will get scaled. This works with LinearLayout.
There's an example in the Android ApiDemos:
ApiDemos/res/layout/linear_layout_9.xml
I was just searching for an answer to this question and this was one of the first results. I feel as if all of the answers, including the one that is currently chosen as the "best answer" is not addressing the issue being asked about. The problem that is being stated is that there is an overlap of the two components Button and ListView in that the ListView is taking up the entire screen, and the Button is visually floating above (in front of) the ListView (blocking view/access of the last item in the ListView)
Based on the answers I've seen here and on other forums, I finally came to a conclusion on how to resolve this.
Originally, I had:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#FF394952">
<ListView
android:id="#+id/game_list"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
/>
<LinearLayout
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
style="#android:style/ButtonBar">
<Button
android:id="#+id/new_game"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="#string/new_game"
android:textColor="#FFFFFFFF"
android:background="#drawable/button_background" />
</LinearLayout>
</RelativeLayout>
Note the use of RelativeLayout as the root node.
This is the final, working version in which the Button does not overlap the ListView:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#FF394952">
<ListView
android:id="#+id/game_list"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_weight="1.0" />
<LinearLayout
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
style="#android:style/ButtonBar">
<Button
android:id="#+id/new_game"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="#string/new_game"
android:textColor="#FFFFFFFF"
android:background="#drawable/button_background" />
</LinearLayout>
</LinearLayout>
There are only two differences. First, I've switched to using a LinearLayout. This will help with the next bit, which was adding android:layout_weight to my ListView
I hope this helps.
The best way is a relative layout that sets the buttons below the listview. In this example the buttons are also in a linear layout because it is easier to put them side by side at an equal size.
<RelativeLayout android:id="#+id/RelativeLayout01"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<ListView android:id="#+id/ListView01"
android:layout_alignParentTop="true"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
</ListView>
<LinearLayout android:id="#+id/LinearLayout01"
android:layout_below="#+id/ListView01"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true">
<Button android:id="#+id/ButtonJoin"
android:text="Join"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:layout_alignParentBottom="true">
</Button>
<Button android:id="#+id/ButtonJoin"
android:layout_alignRight="#id/ButtonCancel"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="Cancel"
android:layout_alignParentBottom="true">
</Button>
</LinearLayout>
</RelativeLayout>
I know this post is rather old, but, to answer the original poster's question, the reason the code did not work was buttons.getId() returns -1. If you are going to do this, you need to set do something like call buttons.setId(10). If you do that, the code works just fine.
the easiest solution would be to create two linear layouts, one with the button and the other with the list view(Wrap content on the button height and match parent on the list layout height). then only make a scroll view over the layout with the list view and the button layout will be ignored. hope it helps, sorry i didn't feel like writing out the code.
this should work. to have buttons above the listview too, put the buttons inside another linear layout.
<LinearLayout> main container // vertical
<LinearLayout> scrollview must be contained in a linear layout //vertical - height to fill parent
<ScrollView> set the height of this to fill parent
<ListView> will be contained in the scrollview
</ListView>
</ScrollView>
</LinearLayout>
<LinearLayout> //horizontal - height to wrap content
<Button>
</Button>
</LinearLayout>
</LinearLayout>

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